Granted Patent
Utility
US 5,594,069 · App. 08/387,821
Process for producing mixed poly(vinyl acetal)s
Inventors:
Donald J. David, Nestor A. Rotstein
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Feb 17, 1995
Inventors
Donald J. David
Nestor A. Rotstein
Assignee (at issue)
Monsanto Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.